The Teardrop Butterflyfish, Chaetodon unimaculatus, is a species of butterflyfish (family Chaetodontidae).

In the Indian Ocean it is replaced by the Yellow Teardrop Butterflyfish (C. interruptus), now considered to be a separate species but previously included in C. unimaculatus as a subspecies. In its subgenus Lepidochaetodon – sometimes considered a separate genus – it is only distantly related to species such as the Sunburst Butterflyfish (C. kleinii) and the Tahiti Butterflyfish (C. trichrous).